const CASHES: [u32; 8] = [100, 50, 30, 20, 10, 5, 2, 1];

pub fn dp_rec_mc(mut amount: u32) -> u32 {
    let mut count = 0;
    for cash in CASHES.iter() {
        count += amount / cash;
        amount %= cash;
    }
    count
}
